Microphone



FIG. 1 is a perspective front view of a microphone showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right and left side view thereof;

FIG. 4 is a front and back view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a microphone, as shown and described. 